.swiper_wrap{
    width:100%;
    height: 100%;
    overflow: hidden;
    background:#000;
    position: absolute;
    top:0;
    left:0;
    z-index:99;
    color:#fff;
    &>div{
        height:100%;
    }
    .swiper_box{
        display: flex;
        align-items: center;
    }
    img{
        width:100%;
    }
}